| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound recognition device or the like, capable of accurately determining even for an input sound including a noise larger than an object sound, whether the object sound is contained therein or not. SOLUTION: The sound recognition device 100 for determining whether an object sound signal is contained in an input sound signal or not comprises a sound signal analysis processing part 210 which disassembles the input sound signal for each of a plurality of frames and forms an input frequency intensity distribution including the plurality of frames; an object sound storage part 260 which disassembles the object sound signal for each of the frames, and stores an object frequency intensity distribution obtained by analyzing the object sound signal for each characteristic frequency; a characteristic frequency extraction processing part 220 which extracts only components of the characteristic frequencies from the input frequency intensity distribution to form a characteristic frequency intensity distribution; a calculation processing part 230 which calculates a difference between the object frequency intensity distribution and the characteristic frequency intensity distribution by comparing both the distributions while shifting the frames; and a determination processing part 240 which determines whether the object sound signal is contained in the input sound signal or not. COPYRIGHT: (C)2009,JPO&INPIT
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